<template>
	<view class="uni-calendar">
		<view
			v-if="!insert && show"
			class="uni-calendar__mask"
			:class="{ 'uni-calendar--mask-show': aniMaskShow }"
			@click="clean"
		></view>
		<view
			v-if="insert || show"
			class="uni-calendar__content"
			:class="{
				'uni-calendar--fixed': !insert,
				'uni-calendar--ani-show': aniMaskShow,
			}"
		>
			<view
				v-if="!insert"
				class="uni-calendar__header uni-calendar--fixed-top"
			>
				<view class="uni-calendar__header-btn-box" @click="close">
					<text
						class="uni-calendar__header-text uni-calendar--fixed-width"
						>{{ cancelText }}</text
					>
				</view>
				<view class="uni-calendar__header-btn-box" @click="confirm">
					<text
						class="uni-calendar__header-text uni-calendar--fixed-width"
						>{{ okText }}</text
					>
				</view>
			</view>
			<view class="uni-calendar__header">
				<view class="uni-calendar__header-btn-box" @click.stop="pre">
					<view
						class="uni-calendar__header-btn uni-calendar--left"
					></view>
				</view>
				<picker
					mode="date"
					:value="date"
					fields="month"
					@change="bindDateChange"
				>
					<text class="uni-calendar__header-text">{{
						(nowDate.year || '') + ' / ' + (nowDate.month || '')
					}}</text>
				</picker>
				<view class="uni-calendar__header-btn-box" @click.stop="next">
					<view
						class="uni-calendar__header-btn uni-calendar--right"
					></view>
				</view>
				<text class="uni-calendar__backtoday" @click="backToday">{{
					todayText
				}}</text>
			</view>
			<view class="uni-calendar__box">
				<view v-if="showMonth" class="uni-calendar__box-bg">
					<text class="uni-calendar__box-bg-text">{{
						nowDate.month
					}}</text>
				</view>
				<view class="uni-calendar__weeks">
					<view class="uni-calendar__weeks-day">
						<text class="uni-calendar__weeks-day-text">{{
							SUNText
						}}</text>
					</view>
					<view class="uni-calendar__weeks-day">
						<text class="uni-calendar__weeks-day-text">{{
							monText
						}}</text>
					</view>
					<view class="uni-calendar__weeks-day">
						<text class="uni-calendar__weeks-day-text">{{
							TUEText
						}}</text>
					</view>
					<view class="uni-calendar__weeks-day">
						<text class="uni-calendar__weeks-day-text">{{
							WEDText
						}}</text>
					</view>
					<view class="uni-calendar__weeks-day">
						<text class="uni-calendar__weeks-day-text">{{
							THUText
						}}</text>
					</view>
					<view class="uni-calendar__weeks-day">
						<text class="uni-calendar__weeks-day-text">{{
							FRIText
						}}</text>
					</view>
					<view class="uni-calendar__weeks-day">
						<text class="uni-calendar__weeks-day-text">{{
							SATText
						}}</text>
					</view>
				</view>
				<view
					class="uni-calendar__weeks"
					v-for="(item, weekIndex) in weeks"
					:key="weekIndex"
				>
					<view
						class="uni-calendar__weeks-item"
						v-for="(weeks, weeksIndex) in item"
						:key="weeksIndex"
					>
						<calendar-item
							class="uni-calendar-item--hook"
							:weeks="weeks"
							:calendar="calendar"
							:selected="selected"
							:lunar="lunar"
							@change="choiceDate"
						></calendar-item>
					</view>
				</view>
			</view>
		</view>
	</view>
</template>

<script>
import Calendar from './util.js'
import CalendarItem from './uni-calendar-item.vue'

import { initVueI18n } from '@dcloudio/uni-i18n'
import i18nMessages from './i18n/index.js'
const { t } = initVueI18n(i18nMessages)

/**
 * Calendar 日历
 * @description 日历组件可以查看日期，选择任意范围内的日期，打点操作。常用场景如：酒店日期预订、火车机票选择购买日期、上下班打卡等
 * @tutorial https://ext.dcloud.net.cn/plugin?id=56
 * @property {String} date 自定义当前时间，默认为今天
 * @property {Boolean} lunar 显示农历
 * @property {String} startDate 日期选择范围-开始日期
 * @property {String} endDate 日期选择范围-结束日期
 * @property {Boolean} range 范围选择
 * @property {Boolean} insert = [true|false] 插入模式,默认为false
 * 	@value true 弹窗模式
 * 	@value false 插入模式
 * @property {Boolean} clearDate = [true|false] 弹窗模式是否清空上次选择内容
 * @property {Array} selected 打点，期待格式[{date: '2019-06-27', info: '签到', data: { custom: '自定义信息', name: '自定义消息头',xxx:xxx... }}]
 * @property {Boolean} showMonth 是否选择月份为背景
 * @event {Function} change 日期改变，`insert :ture` 时生效
 * @event {Function} confirm 确认选择`insert :false` 时生效
 * @event {Function} monthSwitch 切换月份时触发
 * @example <uni-calendar :insert="true":lunar="true" :start-date="'2019-3-2'":end-date="'2019-5-20'"@change="change" />
 */
export default {
	components: {
		CalendarItem,
	},
	emits: ['close', 'confirm', 'change', 'monthSwitch'],
	props: {
		date: {
			type: String,
			default: '',
		},
		selected: {
			type: Array,
			default() {
				return []
			},
		},
		lunar: {
			type: Boolean,
			default: false,
		},
		startDate: {
			type: String,
			default: '',
		},
		endDate: {
			type: String,
			default: '',
		},
		range: {
			type: Boolean,
			default: false,
		},
		insert: {
			type: Boolean,
			default: true,
		},
		showMonth: {
			type: Boolean,
			default: true,
		},
		clearDate: {
			type: Boolean,
			default: true,
		},
	},
	data() {
		return {
			show: false,
			weeks: [],
			calendar: {},
			nowDate: '',
			aniMaskShow: false,
		}
	},
	computed: {
		/**
		 * for i18n
		 */

		okText() {
			return t('uni-calender.ok')
		},
		cancelText() {
			return t('uni-calender.cancel')
		},
		todayText() {
			return t('uni-calender.today')
		},
		monText() {
			return t('uni-calender.MON')
		},
		TUEText() {
			return t('uni-calender.TUE')
		},
		WEDText() {
			return t('uni-calender.WED')
		},
		THUText() {
			return t('uni-calender.THU')
		},
		FRIText() {
			return t('uni-calender.FRI')
		},
		SATText() {
			return t('uni-calender.SAT')
		},
		SUNText() {
			return t('uni-calender.SUN')
		},
	},
	watch: {
		date(newVal) {
			// this.cale.setDate(newVal)
			this.init(newVal)
		},
		startDate(val) {
			this.cale.resetSatrtDate(val)
			this.cale.setDate(this.nowDate.fullDate)
			this.weeks = this.cale.weeks
		},
		endDate(val) {
			this.cale.resetEndDate(val)
			this.cale.setDate(this.nowDate.fullDate)
			this.weeks = this.cale.weeks
		},
		selected(newVal) {
			this.cale.setSelectInfo(this.nowDate.fullDate, newVal)
			this.weeks = this.cale.weeks
		},
	},
	created() {
		this.cale = new Calendar({
			selected: this.selected,
			startDate: this.startDate,
			endDate: this.endDate,
			range: this.range,
		})
		this.init(this.date)
	},
	methods: {
		// 取消穿透
		clean() {},
		bindDateChange(e) {
			const value = e.detail.value + '-1'
			this.setDate(value)

			const { year, month } = this.cale.getDate(value)
			this.$emit('monthSwitch', {
				year,
				month,
			})
		},
		/**
		 * 初始化日期显示
		 * @param {Object} date
		 */
		init(date) {
			this.cale.setDate(date)
			this.weeks = this.cale.weeks
			this.nowDate = this.calendar = this.cale.getInfo(date)
		},
		/**
		 * 打开日历弹窗
		 */
		open() {
			// 弹窗模式并且清理数据
			if (this.clearDate && !this.insert) {
				this.cale.cleanMultipleStatus()
				// this.cale.setDate(this.date)
				this.init(this.date)
			}
			this.show = true
			this.$nextTick(() => {
				setTimeout(() => {
					this.aniMaskShow = true
				}, 50)
			})
		},
		/**
		 * 关闭日历弹窗
		 */
		close() {
			this.aniMaskShow = false
			this.$nextTick(() => {
				setTimeout(() => {
					this.show = false
					this.$emit('close')
				}, 300)
			})
		},
		/**
		 * 确认按钮
		 */
		confirm() {
			this.setEmit('confirm')
			this.close()
		},
		/**
		 * 变化触发
		 */
		change() {
			if (!this.insert) return
			this.setEmit('change')
		},
		/**
		 * 选择月份触发
		 */
		monthSwitch() {
			let { year, month } = this.nowDate
			this.$emit('monthSwitch', {
				year,
				month: Number(month),
			})
		},
		/**
		 * 派发事件
		 * @param {Object} name
		 */
		setEmit(name) {
			let { year, month, date, fullDate, lunar, extraInfo } =
				this.calendar
			this.$emit(name, {
				range: this.cale.multipleStatus,
				year,
				month,
				date,
				fulldate: fullDate,
				lunar,
				extraInfo: extraInfo || {},
			})
		},
		/**
		 * 选择天触发
		 * @param {Object} weeks
		 */
		choiceDate(weeks) {
			if (weeks.disable) return
			this.calendar = weeks
			// 设置多选
			this.cale.setMultiple(this.calendar.fullDate)
			this.weeks = this.cale.weeks
			this.change()
		},
		/**
		 * 回到今天
		 */
		backToday() {
			const nowYearMonth = `${this.nowDate.year}-${this.nowDate.month}`
			const date = this.cale.getDate(new Date())
			const todayYearMonth = `${date.year}-${date.month}`

			if (nowYearMonth !== todayYearMonth) {
				this.monthSwitch()
			}

			this.init(date.fullDate)
			this.change()
		},
		/**
		 * 上个月
		 */
		pre() {
			const preDate = this.cale.getDate(
				this.nowDate.fullDate,
				-1,
				'month'
			).fullDate
			this.setDate(preDate)
			this.monthSwitch()
		},
		/**
		 * 下个月
		 */
		next() {
			const nextDate = this.cale.getDate(
				this.nowDate.fullDate,
				+1,
				'month'
			).fullDate
			this.setDate(nextDate)
			this.monthSwitch()
		},
		/**
		 * 设置日期
		 * @param {Object} date
		 */
		setDate(date) {
			this.cale.setDate(date)
			this.weeks = this.cale.weeks
			this.nowDate = this.cale.getInfo(date)
		},
	},
}
</script>

<style lang="scss" scoped>
$uni-bg-color-mask: rgba(
	$color: #000000,
	$alpha: 0.4,
);
$uni-border-color: #ededed;
$uni-text-color: #333;
$uni-bg-color-hover: #f1f1f1;
$uni-font-size-base: 14px;
$uni-text-color-placeholder: #808080;
$uni-color-subtitle: #555555;
$uni-text-color-grey: #999;
.uni-calendar {
	/* #ifndef APP-NVUE */
	display: flex;
	/* #endif */
	flex-direction: column;
}

.uni-calendar__mask {
	position: fixed;
	bottom: 0;
	top: 0;
	left: 0;
	right: 0;
	background-color: $uni-bg-color-mask;
	transition-property: opacity;
	transition-duration: 0.3s;
	opacity: 0;
	/* #ifndef APP-NVUE */
	z-index: 99;
	/* #endif */
}

.uni-calendar--mask-show {
	opacity: 1;
}

.uni-calendar--fixed {
	position: fixed;
	/* #ifdef APP-NVUE */
	bottom: 0;
	/* #endif */
	left: 0;
	right: 0;
	transition-property: transform;
	transition-duration: 0.3s;
	transform: translateY(460px);
	/* #ifndef APP-NVUE */
	bottom: calc(var(--window-bottom));
	z-index: 99;
	/* #endif */
}

.uni-calendar--ani-show {
	transform: translateY(0);
}

.uni-calendar__content {
	background-color: #fff;
}

.uni-calendar__header {
	position: relative;
	/* #ifndef APP-NVUE */
	display: flex;
	/* #endif */
	flex-direction: row;
	justify-content: center;
	align-items: center;
	height: 50px;
	border-bottom-color: $uni-border-color;
	border-bottom-style: solid;
	border-bottom-width: 1px;
}

.uni-calendar--fixed-top {
	/* #ifndef APP-NVUE */
	display: flex;
	/* #endif */
	flex-direction: row;
	justify-content: space-between;
	border-top-color: $uni-border-color;
	border-top-style: solid;
	border-top-width: 1px;
}

.uni-calendar--fixed-width {
	width: 50px;
}

.uni-calendar__backtoday {
	position: absolute;
	right: 0;
	top: 25rpx;
	padding: 0 5px;
	padding-left: 10px;
	height: 25px;
	line-height: 25px;
	font-size: 12px;
	border-top-left-radius: 25px;
	border-bottom-left-radius: 25px;
	color: $uni-text-color;
	background-color: $uni-bg-color-hover;
}

.uni-calendar__header-text {
	text-align: center;
	width: 100px;
	font-size: $uni-font-size-base;
	color: $uni-text-color;
}

.uni-calendar__header-btn-box {
	/* #ifndef APP-NVUE */
	display: flex;
	/* #endif */
	flex-direction: row;
	align-items: center;
	justify-content: center;
	width: 50px;
	height: 50px;
}

.uni-calendar__header-btn {
	width: 10px;
	height: 10px;
	border-left-color: $uni-text-color-placeholder;
	border-left-style: solid;
	border-left-width: 2px;
	border-top-color: $uni-color-subtitle;
	border-top-style: solid;
	border-top-width: 2px;
}

.uni-calendar--left {
	transform: rotate(-45deg);
}

.uni-calendar--right {
	transform: rotate(135deg);
}

.uni-calendar__weeks {
	position: relative;
	/* #ifndef APP-NVUE */
	display: flex;
	/* #endif */
	flex-direction: row;
}

.uni-calendar__weeks-item {
	flex: 1;
}

.uni-calendar__weeks-day {
	flex: 1;
	/* #ifndef APP-NVUE */
	display: flex;
	/* #endif */
	flex-direction: column;
	justify-content: center;
	align-items: center;
	height: 45px;
	border-bottom-color: #f5f5f5;
	border-bottom-style: solid;
	border-bottom-width: 1px;
}

.uni-calendar__weeks-day-text {
	font-size: 14px;
}

.uni-calendar__box {
	position: relative;
}

.uni-calendar__box-bg {
	/* #ifndef APP-NVUE */
	display: flex;
	/* #endif */
	justify-content: center;
	align-items: center;
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
}

.uni-calendar__box-bg-text {
	font-size: 200px;
	font-weight: bold;
	color: $uni-text-color-grey;
	opacity: 0.1;
	text-align: center;
	/* #ifndef APP-NVUE */
	line-height: 1;
	/* #endif */
}
</style>
